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Soy Milk Soap

Finished Soap

Soy milk is a major part of Chinese life. Unlike life in Utah, soy milk can be found EVERYWHERE! I’m not even talking about shelf stable cartons of sweetened soy milk found at the grocery store. Here in China, soy milk isn’t worth considering unless it is fresh, hot and steaming. Want sweeter soy milk? You can add your desired amount of sugar right from a big bowl of sugar.

Weighing Oils

One of my favorite soaps while I’ve been in China has been my batch of unscented soy milk soap that I made before coming to China. I decided to remake the batch of soy milk soap with one change. This time I decided to add a little bit of Elements of Bamboo Fragrance as it is a nice scent that appreciated by my friends and family who come to visit. I decided to use a light usage rate so it wouldn’t overwhelm or offend any of the noses of my visitors.

Collect needed items:

Hydrogenated Soybean Oil
Coconut Oil
Olive Oil
Sodium Hydroxide
Soy Milk
Elements of Bamboo Fragrance
Soap Spoon
Extra Large Square Tray Mold
Square Tray Mold
Immersion Blender


Recipe in Grams
1134 grams Hydrogenated Soybean Oil
567 grams Coconut Oil
567 grams weight Olive Oil
315 grams Sodium Hydroxide
444 mL Soy Milk
444 mL Water
21 grams Elements of Bamboo Fragrance
Recipe in Ounces
40 ounces weight Hydrogenated Soybean Oil
20 ounces weight Coconut Oil
20 ounces weight Olive Oil
11.1 ounces Sodium Hydroxide
15 fluid ounces Soy Milk
15 fluid ounces Water
0.75 ounces Elements of Bamboo Fragrance
Recipe in Percentages
50% Hydrogenated Soybean Oil
25% Coconut Oil
25% Olive Oil
Q.S. Sodium Hydroxide
Q.S. Soy Milk
Q.S. Water
Q.S. Elements of Bamboo Fragrance

Melted Oils

Time spent:

Weighing time: 8 minutes
Adding lye to water: 15 seconds, followed by 60 seconds of stirring
Heating of oils time: 3 minutes
Pouring lye solution into the fat mixture: 10 seconds
Using immersion blender to mix soap solution: 90 seconds
Adding milk to the batch: 20 seconds
Using immersion blender to completely mix milk into soap: 40 seconds
Pour into molds: 60 seconds
Allow soap to rest: 24 hours

Adding Lye Solution

1) Calculate the amount of lye and liquid needed for the oils you plan to use.

2) Measure all of the oils and set aside to heat gently.

3) Measure the lye and set aside.

Mixing Soap

4) Measure HALF of the needed liquid as water and set aside. Measure HALF of the needed liquid as soy milk and set aside. Milk should be room temperature, not frozen or hot.

Measuring Soy Milk

5) Add ALL of the lye to the water. Stir well. No crystals should remain on the bottom of your mixing vessel. When the temperature of this lye solution is within 110° F to 130° F, (cooler in the summer and warmer in the winter, cooler for large batches and warmer for small batches), add it to the oil mixture. Blend with an immersion blender until you estimate you are halfway through the mixing process. This will happen with most oils in about 1 minute. The mixture should NOT be thick or viscous. The mixture should be very fluid, like water.

Mixed Soap

6) Now steadily pour the milk into the batch. Use the immersion blender to finish the blending so there is no chance of separation.

7) Add fragrance. Pour into prepared SHALLOW molds (1 inch deep or so). Milk soaps can get very hot and shallow molds help the excess heat dump into the air. This will prevent the milk sugars from interrupting the saponification reaction.


Adding Soy Milk

Adding Fragrance Oil

Mixed Milk Soap

Soap In Mold

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